I think Phi is targeted at workloads like scientific fortran applications that no one could be bothered to redesign to take advantage of OCL/etc style programmi

I think Phi is targeted at workloads like scientific fortran applications that no one could be bothered to redesign to take advantage of OCL/etc style programming models. They're 'better' than GPUs in that you can still use x86 and you're not stuck between the current choices: abusive-market-leader and low-quality-deliverables.